Research led by climate scientists from the Vrije Universiteit Brussel (VUB) reveals that millions of today’s young people will live through unprecedented lifetime exposure to heatwaves, crop  failures, river floods, droughts, wildfires and tropical storms under current climate policies. If  global temperatures rise by 3.5°C by 2100, 92% of children born in 2020 will experience unprecedented heatwave exposure over their lifetime, affecting 111 million children. Meeting the  Paris Agreement's 1.5°C target could protect 49 million children from this risk. This is only for one  birth year; when instead taking into account all children who are between 5 and 18 years old today, this adds up to 1.5 billion children affected under a 3.5°C scenario, and with 654 million  children that can be protected by remaining under the 1.5°C threshold. The study also highlights that children with high socioeconomic vulnerability face an even greater likelihood of  unprecedented exposure to climate extremes in their lifetime. Deep cuts in greenhouse gas emissions are urgently needed to safeguard the lives of children all around the world.